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Found you guys when doing some research for my next truck. Considering a new Ram QC 1500 Laramie as one candidate. I did a search on this site for the following, but couldn't find the answers, so.......I noticed that 1 of the 2011 recalls is for a potential rear bearing failure for 2011 build between Oct - mid-Dec 2010 (see recall # above). Talked to a Ram service manager and he said the "fix" for those trucks is to over-fill the rear differential with grease by adding it to the vent in the top of the diff!

Questions:

- What happens down the road when someone doing service on the truck "didn't get the memo" and fills the diff to the bottom of the inspection hole like we have done since the beginning of time?

- Do the trucks that have been built since mid-December 2010 have a new rear diff casting with a higher location for the fill hole (front right on rear diff), or are they just over filling the diff with grease from the factory or has there been some other fix?

I suppose a person could crawl under the fresh-off-the-transport rams being delivered and see if the fill holes are located in the same spot, and if they are, remove the plug to see if grease runs out. ??????????

Or might there be a tech/engineer on the board here that could shed some light?

I spoke with a friend who worked at *cough* GM and she said this happens the odd time on the line. It doesn't get filled to the right level.

My question is, why are they topping it up through the vent hole. I thought you fill through the inspection bolt/hole and top it up to the bottom of that hole.

Filling through the vent hole takes less time. Any overfill is probably blown back out the vent when your differential heats up driving down the highway. I doubt anyone who's diff was filled this way has lube very much above the fill level after driving a few hundred miles.